import React, { Component } from 'react'

export default class App extends Component {
  render() {
    return (
      // <React.Fragment>
      //   <h1>123</h1>
      //   <p>345</p>
      // </React.Fragment>
      
      // Fragment的简写: 
      <>
        <h1>123</h1>
        <p>345</p>
      </>
    )
  }
}
